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Automatic Keyword Extraction Using Linguistic Features

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2 Author(s)
Hu, Xinghua ; Baskin Sch. of Eng., California Univ., Santa Cruz, CA ; Wu, Bin

This paper describes a novel keyword extraction algorithm position weight (PW) that utilizes linguistic features to represent the importance of the word position in a document. Topical terms and their previous-term and next-term co-occurrence collections are extracted. To measure the degree of correlation between a topical term and its co-occurrence terms, three methods are employed including term frequency inverse term frequency (TFITF), position weight inverse position weight (PWIPW), and CHI-square (chi2). The co-occurrence terms that have the highest degree of correlation and exceed a co-occurrence frequency threshold are combined together with the original topical term to form a final keyword. With the linear computational complexity of the algorithm, the vector space of documents in a large corpus or boundless Web can be quickly represented by sets of keywords, which makes it possible to retrieve large-scale information fast and effectively

Published in:

Data Mining Workshops, 2006. ICDM Workshops 2006. Sixth IEEE International Conference on

Date of Conference:

Dec. 2006

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